Yes, I have had the bubbling sounds at the base of my skull. I always feel a little weird after it happens, and sometimes I feel headachy. I have been having this since childhood and always wondered what it was. Most recently, I have been having lots of neurological symptoms...severe headaches, vision problmes, balance issues, and neck and shoulder pain. I recently had a visit with a neurologist(one of many) who suspected I have cranial settling; possilby due to a connective tissue disorder. I am going for an upright FONAR MRI next week. I highly suggest this to anyone and everyone who is having neurological symptoms, especially when they are in an upright position.